Transaction in Own Shares

Impax Environmental Markets plc (the "Company")

LEI: 213800RAR6ZDJLZDND86

Transaction in Own Shares

Impax Environmental Markets plc announces that on 31 July 2025 it purchased 75,000 of its own ordinary shares in the market at a price of 399.5 pence per share. These shares will be held in treasury.

Following this share re-purchase, the Company's issued share capital is 305,623,539 ordinary shares. The Company is holding 102,578,047 of these shares in Treasury. Therefore, the total number of ordinary shares with voting rights in the Company is 203,045,492.

This figure (203,045,492) may be used by shareholders as the denominator for the calculations by which they will determine if they are required to notify their interest in, or a change to their interest in, the Company under the FCA's Disclosure Guidance and Transparency Rules.

Enquiries

Company Secretary

Apex Listed Companies Services (UK) Limited

+44 (0) 7443 970082

Winterflood Securities Limited

+44 (0)20 3100 0000

31 July 2025